Apparatus for casting printers  rollers



(Na Hedel.) I Y 2 sheets-Sheet.;

C. W. CRUTSINGER. l APPARATUS PoR CASTING PRINTERS' ROLLBRS.

No. 572,744. Pazenilted Deo. 8, 1896.

(No Rodel.)

2 um E G N I S T. U R vC W C.

APPARATUS POB. GASTINGPRINTERS ROLLBRS. No. 572,744.

Patented Dec. 8', 1896.

@e a W. w. .M w, a M w UNITED STATES PATENT OFFICE.

CHARLES XV. ORUTSINGER, OF ST. LOUIS, MISSOURI.

APPARATUS FOR CASTING PRINTERS vROLLERS.

SPECIFICATION forming part of Letters Patent. No. 572,744, datedDecember 8, 1896. Application filed August 15, 1896. Serial No. 602,872.(No model.)

To all whom it may concern:

Be it known that I, CHARLES W'. CRUT- SINGER, a citizen of the UnitedStates,'resid ing at St. Louis, State of Missouri, have invented certainnew and useful Improvements in Apparatus for Casting Printers Rollers,of which the following is a full, clear, and exact description,reference being had to the ac# companying drawings, forming a parthereof. My invention has relation to improvements in apparatus forcasting printers rollers; and it consists in the novel arrangement andcombination of parts more fully set forth in the specification andpointed out in the claims.

In the drawings, Figure l is a middle vertical section of themold-receptacle, taken on the line a a of Fig. 2. Fig. 2 is a bottomplan view of the mold-receptacle, showing the connections tothesupply-tank. Fig. 3 is a top plan View, enlarged, of the core-supportingplug. Fig. 4 is a plan of the mold-centering spider, showing the mold insection. Fig. 5 is a detail plan of the electrical cut-off mechanism forthe cocks or valves of the composition-supply tank. Fig. 6 is a sectionon b b of Fig. '7, taken through the cup carried by the lower end of themold. Fig. 7 is a bottom plan view of the cup. Fig. S is a detailsection of the pipe leading to the cup and the elbow coupled thereto.Fig. 9 is a section on c c of Fig. 8. Fig. l0 is a bottom plan view ofthe bevel-guide coupling-plate forming the lower end of the pipe leadingto the cup. Fig. 11 is a bottom plan view of the coupling end of theelbow adapted to be coupled to the coupling-plate carried by the pipeshown in Fig. lO. Fig. l2 is a bottom plan view of a modied form of cup.Fig. 13 is a section on d d of Fig. l2. Fig. lll is a section of amodified form of cup, said modication being in the form of a plate. Fig.15 is a top plan of a modified form of mold-receptacle, and Fig. 16 isan elevation of the preferred 'form of composition-supply tank.

The object of my invention is to construct an apparatus for the castingof printers rollers singly or in clusters, the apparatus being soconstructed as to enable the operator to iill the molds of a clusterwith either the same or a different kind of composition at one and thesame time and cooling all the molds simultaneously; to enable theoperator to cast different lengths of rollers in the same clusterwithout excessive heads or stopping off with plugs; to enable himfurther to fill any number of moldsat pleasure without in any wiseinterfering with the unfilled molds; and to enable him to discharge J[hecontents of the individual molds at any convenient time, avoiding thenecessity and inconvenience of discharging the entire series at onetime, as must be done with the old forms of cluster apparatus.

A further object is to so construct the cluster of molds whereby in thecasting of the roller a minimum amount of composition will be trimmedfrom the finished roller, thereby materially economizing the materialentering into the composition of any roller; and to anism by which thesupply of the roller com-` position is shut od when a roller reaches apredetermined length and whereby an alarm is sounded to indicate that aroller has been cast.

The above advantages of the present system will be more clearly apparentfrom a detailed description of the apparatus, which is as follows:

Referring to the drawings, l represents a suitable mold-receptacleprovided with trunnions 2, by which it may 'be mounted and about whichit may be revolved on any suitable supporting-frame. (Not shown.)Disposed-between the top and bottom of said receptacle is a series ofmolds 3, open at both ends, the upper end of each mold projectingslightly above the top of the receptacle and the lower end beingsubstantially flush with the outer surface of the bottom of saidreceptacle.

The lower open end of each mold is adapted to be closed by a plate orcup 4, depending IOO (in the preferred form of construction) a suitabledistance below the bottom, the upper edge of the cup being inserted ashort distance into the mold and being held or secured to the bottom ofthe receptacle about the mold by means of the retaining-screws 5,carried by the bottom and projecting through the curved slots 6, cut inthe flanges 7, forming a part of each cup, the flanges being adapted tobear against the outer surface of the bottom of the receptacle and beingsecured by iirst adjust-ing each cup so as to bring the enlargeddiagonal ends 6' of the slots in alinement with the openings ofthebottom of the receptacle designed to receive the screws, then drivingthe screws through the openings thus brought into alinement until theheads 8 of said screws are brought to bear against the, outer surface ofthe flange, when, by giving the cup a sufficient turn or twist to bringthescrews to the opposite ends` of the slots, the said screws can befurther driven home or screwed to bring their heads 8 firmly against jthe flange, whereby the latter will be firmly held to the bottom of thereceptacle. The cups 4 are thus temporarily retained` or clamped inplace. The walls of the center opening 9- of each cuplform a support forthe plug 10, by which is carried the core 11 of the mold and throughwhich passes the lower end of the rod 12, forming one of the gudgeons ofthe completed roller. through the core and projects beyond the endsofthe same, (the opposite projecting end ofthe rod forming the oppositegudgeon for the roller,) passing also through the central opening of thespider 13, by which the core and rod 12, carried by it, are properlycentered within the mold.

Communicating with ank opening 14 at the base of the cup 4 isa pipe 15,provided with a cock or valve 16 for the admission of the liquidcompositiony into the cup. and mold. The: base of the pipe 15- isprovidedv with a flanged coupling-plate 16', which isl provided adjacenttothe openend of the pipe with inclinedlbevelfgrooves, forming awedge-shaped guideway 17. The said guideway is adapted to receive thebeveled expanded upper end or flange118 of the elbow or pipe-19.

Itis apparent that by slippingthe expanded end` l=8 intol the guideway17 from the wide end of the latter a ready and easy coupling orconnection iseffected between the pipes 1.5fand19, it being understoodthat the uncoupling ofA these pipes is resorted to whenoccasionrequires,the'removal of the cup from thebottom of the moldatwhich it is secured. The opposite end: of the elbow 19-hassecuredthereto-a iiexible hose-20, leading to one of a series of cocks of acomposition-supply tank 21.

Any number of supply-tanks can be employed, eachx with a differentcomposition, whereby the several molds may be filled with differentcompositions at one or at different times-and todifferent lengths ofroller, or the several molds may be coupled tothe same The rod 12 passestank and the different molds filled with the same composition to thesame or different heights.

In reconstructing an old receptacle in which the individual molds are ormay be of small diameter and where it would be impractical to secure acup large enough to admit of two openings 9 14 in the bottom thereof Iform for such a receptacle a cup with a lateral extension or tube 15',as seen in Figs. 12 and 13, to which the elbow 19 can be similarlycoupled. In Fig. 14 Ihave shown a still further modification of cup inthe shape of a plate 22, which rests directly on the bottom of thereceptacle and which in lieu of the plug 10 supports a ring 10', onwhich the core is directly supported. The cups 4 (or plates 22) ofcourse serve to temporarily plug up the lower open end of the mold tosupport the core in the mold andv to serve as a means for attaching thepipes through which the composition is fed to the mold.

In Fig. 1.5 I have shown a modified form of receptacle, which, in theplace of being cylindrical in form, is oblong in shape.

In Fig. 16, 23 represents the roller-supported frame by which the tankis carried, the cocks 24 thereof being arranged in the same straightline, so that any cock can be easily coupled to any one of the series ofhoseleading from the elbows 19; Such a tank too can be wheeled directlyto the receptacle without inconvenience.

rllo indicate when the roller has been cast tothe required length. andto automatically cut off the supply of the composition from thesupply-tank, I employ the following electrical cut-off mechanism andalarm:

B represents a battery, from one: pole of whichl leads the wire a to.thev plate 25, form.- ing the-cover for thefmold. From the opposite poleleads the wire b to an alarmfbell 26. Leading from the bell is a wire cto; an electromagnet M, from which leads the returnF current wire d, thesame passing. through 'a suitable opening in the plate or cover 25v andvconnecting with. a metallic col-lar 26, which embraces the floatingstem 27 ,the said collar being held in any adjusted position on saidstem: by means of the resiliency of the flexed spring-arm 2S', forming apart of the collar andv bearing against theA stem.

rlhe stem passes loosely through the plate 25 and is guided by it and issupported. from it by the adjustable collar or clamp 30, carried bytheouter projecting end of the stem.

vthe particular roller has been cast and that roo IIO

IIS

" the composition has risen to the required height in the mold. At thesame time that ergized, attracting under those circumstances thearmature 31, which latter forms one arm of a bell-crank pivoted to abracket 32 of the supply-tank, the opposite arm of the bellcrank beingin the shape of a toothed segment or arm 33, the teeth of which meshwith a pinion 34, carried by or forming part of the stern of any of thecocks or valves 24 leading from the supply-tank. By the tilting orrocking of the armature as a result of the enerf gizing action of thecurrent on the magnet the segment 33 is tilted sufficiently to turn thepinion 34 a distance to effect the closing of the valve of which itforms a part against the further influx of composition into the mold.The receptacle is provided with the usual inlet and outlet valves forthe admission and escape of water used in the cooling of the molds afterthe rollers have been cast.

From the foregoing it is apparent that one man can readily handle theapparatus. Any roller after being` cast can be readily withdrawn by theremoval of the cup by which the 4 lower end of the mold is covered andby which the core of the mold is always properly centered without theuse of a bottom spider. The different molds can be filled to anypredetermined height. Any number of molds can be operated onindependently ofthe remaining molds of the series. Any kind ofcomposition can be vturned into any one or all themolds and to anydesired height. All the molds can be cooled simultaneously irrespectiveof the length of the roller cast or character of the compositionentering into it, and on the whole the present system presen-ts all theadvantages enumerated in the foregoing part of this specification.

It is apparent, of course, that many minor changes might be made inconstruction without departing from the spirit of myinvention.

One of' the distinguishing features of the present apparatus is thateach roller when cast can be removed from its mold without the necessityof trimming any of the composition (and thus roughening the surface ofone end of the roller) from which it was cast. In the old form ofapparatus, where clusters have been cast by composition entering all themolds from a chamber above a single bottom plate, a portion of suchcompositionviz., that remaining in the bottom chamber after the castingoperation-forms an integral part of the composition making up theseveral rollers, which to be removed singly have to be first trimmedfrom the bottom layer of composition referred to, and in withdrawing theroller through the opening thus formed in the bottom layer ofcomposition from which the roller was trimmed there is danger ofroughening the outer surface of the roller, which under ordinarycircumstances is always smooth when cast, and the only condition underwhich the rollers cast in the old form of apparatus can be withdrawnwithout subjecting their outer smooth surface to the roughening referredto is to Withdraw them all at one time, a disadvantage which I totallyavoid by being able to withdraw each roller singly and independently ofany other roller of the cluster.

Having described my invention, what I claim isl. In an apparatus forcasting printers rollers, a suitable mold -receptacle, a series of moldsopen at both ends disposed therein, a detachable plate for temporarilyclosing the bottom of each mold, a suitable inlet-pipe communicatingwith each plate, whereby the molds can be iilled either singly andsimultaneously, or at different times, and rollers of variable lengthsand of diiferent or the same composition can be cast simultaneously orindependently, the said plate serving to support and center the lowerend of the core inserted in each mold, and means for centering andsupporting the opposite end of the core within the mold, substantiallyas set forth.A 2. In an apparatus for casting printersrollers, asuitable mold-receptacle, a series of molds open at both ends disposedtherein, a detachable plate temporarily closing the bottom of each mold,each plate having a suitable inlet-opening whereby the molds can befilled either singly and simultaneously, or at different times, androllers of variable lengths and of different or the same composition canbe cast simultaneously, or independently and at IOO different times, andwhereby upon removal of the plates the rollers can be removed singly, acentral opening formed in the base of each plate, a plug inserted insaid opening, a core supported directly on saidlplug, a rod passingthrough the core and having its projecting end passed through the plugwhereby the lower endof' the core is properly centered within the mold,a spider for centering the upper end of the core within the mold,substantially as set forth.

3. In an apparatus for casting printers rollers, a suitablemold-receptacle, a series of molds disposed therein, a detachableindependent plate adapted to temporarily close the bottom of each mold,means carried by the plate for centering the lower end of the core inthe mold and supporting the same, a series of composition-supply tanks,and pipe connections between the supply-tanks and IIO the detachableplates, whereby the molds can be filled either simultaneously, orindependently and at diiferent times, and rollers of variable lengthsand of different or the same composition can be cast simultaneously, orindependently and at different times, and be `removed singly,substantially as set forth.

float being 'adapted to close the circuit for a predetermined height 0fthe composition in the mold, a suitable valve or cock for the admissionof the composition into the mold, and intermediate connections betweensaid cock or valve and the electric circuit for controlling the cock andcutting oif the composition upon the closing ofthe circuit,substantially as set forth.

5. In an apparatus for casting printers rollers, asuitable receptacle, aseries of molds disposed therein, an inlet-pipe for the bottom of eachmold, a composition-supply tank, pipe connections between the inlet-pipeto the mold and the said supply-tank, a float depending a suitabledistan ce into each mold, a guide-plate for guiding said Iioat, anelectric circuit adapted to be closed by the float for any predeterminedelevation or height of the composition in the mold, an energizing-magnetforming a part of the circuit, a tilting lever one arm of whichconstitutes the armature for said-magnet,the second arm of said leverhaving a series of ratchet-teeth, a pinion meshing with said ratchet,said pinion cooperating with the stem of the valve leading` from thesupply-tank, whereby upon the closing of the circuit the supply ofcomposition from the tank is shut off, substantially as set forth.

G. In an apparatus for casting printers rollers, a suitable cup havingoutwardly-extending iianges adapted to be secured to the bottom of thereceptacle below the opening of the molds of the same, a curved slothaving an enlarged end formed along each flange, a screw projecting fromthe bottom of the receptacle and adapted to be passed through the slotof each ilange, a retaining-head for each screw, a central openingformed in the base of each cup for the passage of the gudgeon of theroller, a pipe leading into said cup for delivering composition into thesame, a e

flanged coupling-plate carried at the bottom of the said pipe, inclinedgrooves formed in vis effected between the elbow and the pipe leading tothe cup, and'suitable pipe connections between the elbow and thesupply-tank for the mold, substantially as set forth.

7T. In an apparatus for casting printers rollers, a suitable receptacle,a series of molds open at both ends disposed therein, a detachable platefor temporarily closing the bottoml of each mold, a pipe leading to eachplate for admitting composition into the mold, whereby the several moldscan be filled simultaneously, or independently at different times withthe same or different composition tothe same or variable heights, andthe several rollers removed singly and without material trimming, one ormore supply-tanks, and suitable pipe connections between any supply-tankand one or more of the plates leading to the molds, substantially as setfort-h.

Inv testimony whereof I affix my signa-ture in presence of twowitnesses.

CHARLES XV. ORUTSINGER. VitnesSeS:

ALFRED A. MATH-Ev, EMIL STAREK.

